Broomhall, T.J., Rushforth, A.W., Rosamond, M.C. et al. (2 more authors) (2020) Suppression of dynamically induced stochastic magnetic behavior through materials engineering. Physical Review Applied, 13 (2). 024039.
Abstract
Stochastic behavior fundamentally limits the performance and reliability of nanomagnetic devices. Typically, stochastic behavior is assumed to be the result of simple thermal activation, but it may also be “dynamically induced,” i.e., a direct result of the spatial and temporal complexity of magnetization dynamics. Here, we show how materials engineering can be used to comprehensively suppress dynamically induced stochasticity. Using the dynamics of magnetic domain walls in Ni80Fe20 nanowires as a case study, we show how manipulation of the Gilbert damping constant via doping with the rare-earth-element terbium dramatically simplifies domain-wall dynamics. This allows us to obtain quasi-deterministic behaviors from systems that nominally exhibit exceptionally high levels of stochasticity.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 American Physical Society. This is an author-produced version of a paper subsequently published in Physical Review Applied. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Funding Information: | Funder Grant number Engineering and Physical Science Research Council EP/J002275/1; EP/S009647/1 Leverhulme Trust (The) RPG-2019-097 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 23 Mar 2020 08:49 |
Last Modified: | 23 Mar 2020 08:49 |
Status: | Published |
Publisher: | American Physical Society (APS) |
Refereed: | Yes |
Identification Number: | 10.1103/physrevapplied.13.024039 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:158651 |